B76/100
WINCHESTER WATER DEPT — Water Quality Report 2026
Serving 2,800 people · New Hampshire
Water Source
Groundwater
County
—
System ID
NH2531010
Violations
4
Contaminant Test Results
1 contaminant above EPA health goals
| Contaminant | Detected | Limit (MCL) | Status |
|---|---|---|---|
Copper (90th percentile) | 1.51 mg/L | 1.30 mg/L | Over Limit |
EPA Violation History
No violations in the past 5 years
Full EPA compliance since 2016.
Understanding violation severity
Tier 1Urgent health risk. Utility must notify all customers within 24 hours.Tier 2Important health or treatment issue. Customers notified within 30 days.Tier 3Administrative or monitoring issue. Reported in the annual water quality report.
Source: EPA Safe Drinking Water Information System (SDWIS) · Updated quarterly
Frequently Asked Questions About WINCHESTER WATER DEPT
Is WINCHESTER WATER DEPT water safe to drink?
WINCHESTER WATER DEPT water receives a grade of B (76/100), which is considered good. Out of 1 contaminants tested, 1 exceed EPA legal limits. 1 contaminant(s) exceed non-enforceable health goals. The water meets federal safety standards.
What contaminants has WINCHESTER WATER DEPT detected?
1 contaminants were tested in WINCHESTER WATER DEPT's water. Notable contaminants include Copper (90th percentile). 1 exceed EPA legal limits (MCLs). 1 exceed EPA health goals (MCLGs).
Does WINCHESTER WATER DEPT have any EPA violations?
Yes, WINCHESTER WATER DEPT has 4 EPA violation(s) on record, with the most recent in 2016. Violation types include MR, MCL, TT. 3 are health-based violations.
How many people does WINCHESTER WATER DEPT serve?
WINCHESTER WATER DEPT serves approximately 2,800 people, New Hampshire. The system provides water to 1 community: Winchester.
What type of water does WINCHESTER WATER DEPT provide?
WINCHESTER WATER DEPT sources its water from groundwater. Groundwater is pumped from underground aquifers, which often provides natural filtration. The utility's system ID is NH2531010.
How does WINCHESTER WATER DEPT compare to other utilities in New Hampshire?
WINCHESTER WATER DEPT scores 76/100 with a grade of B (good). This is an above-average performance for utilities statewide. Visit our New Hampshire state page for a full comparison of water systems.